diff --git a/CMakeLists.txt b/CMakeLists.txt
index f04b733be..4a80e87bc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -235,11 +235,18 @@ else()
     message(FATAL_ERROR "Qt version ${Launcher_QT_VERSION_MAJOR} is not supported")
 endif()
 
-include(ECMQueryQt)
-ecm_query_qt(QT_PLUGINS_DIR  QT_INSTALL_PLUGINS)
-ecm_query_qt(QT_LIBS_DIR     QT_INSTALL_LIBS)
-ecm_query_qt(QT_LIBEXECS_DIR QT_INSTALL_LIBEXECS)
-ecm_query_qt(QT_DATA_DIR     QT_HOST_DATA)
+if(Launcher_QT_VERSION_MAJOR EQUAL 5)
+    include(ECMQueryQt)
+    ecm_query_qt(QT_PLUGINS_DIR  QT_INSTALL_PLUGINS)
+    ecm_query_qt(QT_LIBS_DIR     QT_INSTALL_LIBS)
+    ecm_query_qt(QT_LIBEXECS_DIR QT_INSTALL_LIBEXECS)
+    ecm_query_qt(QT_DATA_DIR     QT_HOST_DATA)
+else()
+    set(QT_PLUGINS_DIR  ${QT${QT_VERSION_MAJOR}_INSTALL_PREFIX}/${QT${QT_VERSION_MAJOR}_INSTALL_PLUGINS})
+    set(QT_LIBS_DIR     ${QT${QT_VERSION_MAJOR}_INSTALL_PREFIX}/${QT${QT_VERSION_MAJOR}_INSTALL_LIBS})
+    set(QT_LIBEXECS_DIR ${QT${QT_VERSION_MAJOR}_INSTALL_PREFIX}/${QT${QT_VERSION_MAJOR}_INSTALL_LIBEXECS})
+    set(QT_DATA_DIR     ${QT${QT_VERSION_MAJOR}_INSTALL_PREFIX}/${QT${QT_VERSION_MAJOR}_INSTALL_DATA})
+endif()
 set(QT_MKSPECS_DIR ${QT_DATA_DIR}/mkspecs)
 
 # NOTE: Qt 6 already sets this by default